Truck grill guard



FIG. 1 is a front perspective view of a truck grill guard showing my design;

FIG. 2 is a side elevational view, the side opposite being a reverse mirror image thereof;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a front elevational view; and

FIG. 6 is a bottom plan view. 

The ornamental design for a truck grill guard, as shown and described. 